形容词
中文翻译：外星系的
同义词：
['extragalactic', 'extrasolar例句：1. Extragalactic objects are often found in the outer regions of our galaxy.（外星系对象通常在我们银河系的外围区域被发现。）']
例句：
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1. Extragalactic objects are often found in the outer regions of our galaxy.
外星系对象通常在我们银河系的外围区域被发现。
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2. The search for extragalactic life has been a major focus of recent astronomy research.
寻找外星系生命的研究是近期天文学的主要焦点。
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3. The discovery of a new extragalactic galaxy has sparked excitement among astronomers.
发现一个新的外星系星系引起了天文学家们的兴奋。